Residential delivery area · Pennsylvania
ZIP Code 18088: Walnutport, PA
ZIP code 18088 uses the postal name Walnutport, Pennsylvania and lies entirely in Northampton County (Census 2020 ZIP-county file). About 8,500 people live there (Census Bureau, ACS 2020-2024). Median household income is $82,083 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Cherryville (7%) and Walnutport (4%); 89% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Walnutport · its only residential ZIP
- County
- Northampton County
- Census places
- Cherryville (7%) census-designated place; Walnutport (4%)
- Neighborhood
- Walnutport Acres GeoNames
- Metro area
- Allentown-Bethlehem-Easton, PA-NJ
- House district
- PA-7 119th Congress
- State
- Pennsylvania
- Time zone
- Eastern
- Land area
- 19.1 sq mi · 446 people per sq mi
Where is ZIP code 18088?
18088 centers on 40.766°, -75.558° and covers 19.1 square miles of land plus 0.4 of water. It borders 8 ZIP codes: 18035, 18086, 18059, 18038, 18071, 18080, 18067, 18014.
The map draws ZIP code areas only. For the streets inside 18088, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 18088 compare with the rest of Northampton County?
| Measure | 18088 | In Northampton County | In PA |
|---|---|---|---|
| People (ACS 2020-2024) | 8,488 | 15th of 26 | 467th of 1,833 |
| Median household income | $82k | 9th of 17 | 359th of 1,015 |
| Median home value | $253k | 17th of 21 | 377th of 1,069 |
Its median household income is higher than in 65% of U.S. residential ZIP codes, and it is denser than 71% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 18088?
The 2020 Census counted 8,603 people in 18088; the ACS, which samples households over 2020-2024, estimates 8,488. Between the 2010 and 2020 censuses its population grew 2.7% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 8,488±850 (90% margin)
- 2020 Census count
- 8,603+2.7% since 2010 (8,375)
- Households
- 3,296
- Median age
- 50.0
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 18088?
Of the 8,488 people the ACS estimates in 18088, 16.3% are under 18 and 24.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (88.1%).
- Under 1816.3%
- 18 to 6459.4%
- 65 and older24.3%
- White, not Hispanic88.1%
- Hispanic or Latino4.7%
- Other or two or more4.2%
- Black, not Hispanic1.9%
- Asian, not Hispanic1.2%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 18088 earn?
Median household income is $82,083 (ACS 2020-2024), the 9th highest of the 17 ranked ZIP codes in Northampton County. It is not measurably different from 2015-2019 ($79,671 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $82,083±$12,495
- Income per person
- $41,030
- Below the poverty line
- 8.8%
- Unemployed (of the labor force)
- 4.1%
- Adults 25+ with a bachelor's degree
- 19.0%
- Adjusted gross income per tax return, 2022
- $80,1714,620 returns; wages 68% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 18088?
FHFA's house price index for 18088, built from repeat sales and appraisals of the same homes, rose 91% from 2015 to 2025 and rose 57% from 2020 to 2025, and moved +8.8% in 2025.
- Median home value (owners' estimate)
- $252,700
- Median gross rent
- $1,331
- Homes owned by their occupants
- 87.8%
- Housing units
- 3,487
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 18088?
172 business establishments had a location in this ZIP code in 2023, 8 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction37
- Retail trade28
- Other services (except public administration)22
- Administrative and support and waste management and remediation services17
- Accommodation and food services16
- Health care and social assistance13
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 18088?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 18035 | Cherryville | 39 | – | 1.4 mi |
| 18086 | Treichlers | 229 | $69k | 1.9 mi |
| 18059 | Laurys Station | 744 | $168k | 3.0 mi |
| 18038 | Danielsville | 3,549 | $117k | 4.2 mi |
| 18071 | Palmerton | 11,313 | $70k | 4.7 mi |
| 18080 | Slatington | 11,226 | $75k | 4.9 mi |
| 18067 | Northampton | 19,590 | $94k | 5.2 mi |
| 18014 | Bath | 12,097 | $82k | 7.6 mi |
| 18012 | Aquashicola | 32 | – | 3.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.